The film finds Thor on a journey unlike anything he's ever faced — a quest for inner peace. But his retirement is interrupted by a galactic killer known as Gorr the God Butcher, who seeks the extinction of the gods. To combat the threat, Thor enlists the help of King Valkyrie, Korg, and ex-girlfriend Jane Foster, who — to Thor's surprise — inexplicably wields his magical hammer, Mjolnir, as the Mighty Thor.